Category » Teardowns and Disassembly

Geek Articles

Lens Teardown of the Complicated Sony FE 70-200mm f/2.8 GM OSS: Part I

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A lot of you are aware that we’ve been rather puzzled by the Sony FE 70-200mm f/2.8 GM OSS lens. It didn’t test like we expected it to, which led us to reevaluate our testing methods with outside consultants (we’re now comfortable they are valid, BTW), question the accuracy of different types of autofocus, and search […]

Equipment

Opening up the New Canon 70-300mm f/4-5.6 IS II

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As with most new lenses, a Canon 70-300mm f/4-5.6 IS II made it’s way back to the repair department for an initial tear-down. I know there’s some randomness as to what we tear down, but we have some reasons for doing these. Sometimes, like with this new Canon, it’s simply because we know Lensrentals is […]

Geek Articles

An Inside Look at the Rokinon 50mm AF FE Autofocus Lens

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I have had a love-hate relationship with Samyang / Rokinon lenses for a long time now. (We carry the Rokinon brand, because the distributor, Elite Brands offers repair services in the U. S.) Rokinon lenses provide good optics at an incredible price. They aren’t ‘built like a tank’ and aren’t going to take a lot […]

Geek Articles

Taking Apart the New Nikon 105mm f/1.4E ED AF-S

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We recently tested the Nikon 105mm f/1.4E ED AF-S lens and were mightily impressed. Optically it was better than I’d ever expected. We had idly talked about doing a teardown when stock allowed, but we got an unexpected opportunity yesterday:¬†one of our week-old copies had some significant dust in both the front and rear lens […]

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